//
//  VisitorLoginView.swift
//  Weibo T
//
//  Created by mac on 15/11/27.
//  Copyright © 2015年 陈肖坤. All rights reserved.
//

import UIKit

//定义访客视图的协议 optional 是OC中的关键字
@objc protocol VisitorLoginViewDelegate: NSObjectProtocol {
//协议提供的方法
//必选的协议方法
//登录的协议方法
   optional func userWilllogin()
//注册的协议方法
    func userWillRegister()
    
}

class VisitorLoginView: UIView {

    //提供代理
    weak var visitorViewDelegate: VisitorLoginViewDelegate?
    
    //对外提供访问信息
    func setWithInfo(tipText: String , imageName: String?) {
        tipLabel.text = tipText
        if let name = imageName {
        circleView.image = UIImage(named: name)
        iconView.hidden = true
        bringSubviewToFront(circleView)
        }else{
          startAnimation()
        }
    }
    private func startAnimation() {
        let anim = CABasicAnimation(keyPath: "transform.rotation")
        anim.repeatCount = MAXFLOAT
        anim.duration = 20.0
        anim.toValue = 2 * M_PI
        anim.removedOnCompletion = false
        circleView.layer.addAnimation(anim, forKey: nil)
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        setupUI()
        
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    private func setupUI() {
        //添加子试图
        addSubview(circleView)
        addSubview(backView)
        addSubview(iconView)
        addSubview(tipLabel)
        addSubview(loginBtn)
        addSubview(registerBtn)
        //设置布局
        //VFL 进行自动布局
        /**
        *  将约束添加到父视图
        *
        *  @param item         添加约束的对象
        *  @param attribute 要添加约束的属性
        *  @param relatedBy  相对的约束  一般使用 精准约束  equal
        *  @param toItem        添加的约束 相对于的视图
        *  @param attribute 相对约束的对象的属性
        *  @param multiplier           约束的关系乘积值
        *  @param constant           约束值
        *
        *  @return "view1.attr1 = view2.attr2 * multiplier + constant
        */
        
        //使用VFL手动添加约束 必须将frame 设置视图的位置的属性 关闭

        for v in subviews {
            v.translatesAutoresizingMaskIntoConstraints = false
        }
        addConstraint(NSLayoutConstraint(item: circleView, attribute: .CenterX, relatedBy: .Equal, toItem: self, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: circleView, attribute: .CenterY, relatedBy: .Equal, toItem: self, attribute: .CenterY, multiplier: 1, constant: -60))
        
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterX, relatedBy: .Equal, toItem: circleView, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterY, relatedBy: .Equal, toItem: circleView, attribute: .CenterY, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .CenterX, relatedBy: .Equal, toItem: circleView, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Top, relatedBy: .Equal, toItem: circleView, attribute: .Bottom, multiplier: 1, constant: 16))
        //If your equation does not have a second view and attribute, use nil and NSLayoutAttributeNotAnAttribute.
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 230))
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 40))
        
        
        //按钮的约束
        
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Left, relatedBy: .Equal, toItem: tipLabel, attribute: .Left, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLabel, attribute: .Bottom, multiplier: 1, constant: 20))
        //If your equation does not have a second view and attribute, use nil and NSLayoutAttributeNotAnAttribute.
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))
        
        
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Right, relatedBy: .Equal, toItem: tipLabel, attribute: .Right, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLabel, attribute: .Bottom, multiplier: 1, constant: 20))
        //If your equation does not have a second view and attribute, use nil and NSLayoutAttributeNotAnAttribute.
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))

        //添加遮罩视图的约束
        //OC中有多个枚举选项 使用 按位或  swift-> 给定数组
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[maskView]-0-|", options:[] , metrics: nil, views: ["maskView": backView]))
        
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[maskView]-(-35)-[regBtn]", options:[] , metrics: nil, views: ["maskView": backView,"regBtn": registerBtn]))
        
        //设置背景颜色
        backgroundColor = UIColor(white: 0.93, alpha: 1)
        
        //添加按钮点击事件
        loginBtn .addTarget(self, action: "loginDidClick", forControlEvents: .TouchUpInside)
        registerBtn .addTarget(self, action: "registerDidClick", forControlEvents: .TouchUpInside)
        
        
    }
    //响应方法
    @objc func loginDidClick() {
        visitorViewDelegate?.userWilllogin?()
    }
    @objc func registerDidClick() {
    
        visitorViewDelegate?.userWillRegister()
    }
    
    
    private lazy var backView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    
    private lazy var circleView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    
    private lazy var iconView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    
    private lazy var tipLabel: UILabel = UILabel(title: "关注一些人，回这里看看有什么惊喜",fontSize:14)
        
    private lazy var loginBtn: UIButton = UIButton(title: "登录", backImage: "common_button_white_disable", color: darkGraysColor)
    
    
    private lazy var registerBtn: UIButton = UIButton(title: "注册", backImage: "common_button_white_disable", color: UIColor.orangeColor())
   

}
